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Cell membranes are found in both animal and plant cells. They are composed of a phospholipid bilayer, which is responsible for controlling what can come into and out of the cell.

Plant cells also have a cell wall, which animal cells do not. This is outside of the cell membrane. It is composed primarily of cellulose, hemicellulose and pectin - and provides structural support and rigidity to the plant cell.

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12y ago

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